On Mon, Jan 13 2003, Zwane Mwaikambo wrote:
> On Mon, 13 Jan 2003, Jens Axboe wrote:
>
> > On Mon, Jan 13 2003, Terje Eggestad wrote:
> > > > > I have the console on a serial port, and a terminal server. With kdb,
> > > > > you can enter the kernel i kdb even when deadlocked.
> > > >
> > > > Even if spinning with interrupt disabled?
> > >
> > > Haven't painted myself into that corner yet. Doubt it, very much.
> >
> > These are the nasty hangs, total lockup and no info at all if it wasn't
> > for the nmi watchdog triggering. That alone is reason enough for me :-)
>
> It uses NMI's to break into the debugger, so it would also work with
> interrupts disabled and spinning on a lock, the same is also true for
> kgdb.
But still requiring up-apic, or smp with apic, right?
-- Jens Axboe- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
This archive was generated by hypermail 2b29 : Wed Jan 15 2003 - 22:00:46 EST